There are other issues here addressing the same question, but I don't realize how to solve my problem based on it. So, I have 5 data frames that I want to merge rows in one unique data frame using rbind, but it returns the error:
"Error in row.names<-.data.frame(*tmp*, value = value) : 'row.names' duplicated not allowed In addition: Warning message: non-unique values when setting 'row.names': '1', '10', '100', '1000', '10000', '100000', '1000000', '1000001 [....]" The data frames have the same columns but different number of rows. I thought the rbind command took the first column as row.names. So tried to put a sequential id in the five data frames but it doesn't work. I've tried to specify a sequential row names among the data frames via row.names() but with no success too. The merge command is not an option I think because are 5 data frames and successive merges will overwrite precedents. I've created a new data frame only with ids and tried to join but the resulting data frame don't append the columns of joined df. Follows an extract of df 1: id image power value pol class1 1 tsx_sm_hh 0.1834515 -7.364787 hh FR2 2 tsx_sm_hh 0.1834515 -7.364787 hh FR3 3 tsx_sm_hh 0.1991938 -7.007242 hh FR4 4 tsx_sm_hh 0.1991938 -7.007242 hh FR5 5 tsx_sm_hh 0.2079365 -6.820693 hh FR6 6 tsx_sm_hh 0.2079365 -6.820693 hh FR[...]1802124 1802124 tsx_sm_hh 0.1991938 -7.007242 hh FR The four other df's are the same structure, except the 'id' columns that don't have duplicated numbers among it. 'pol' and 'image' columns are defined as levels. and all.pol <- rbind(df1,df2,df3,df4,df5) return the this error of row.names duplicated. Any idea? Thanks in advance -- *Jefferson Ferreira-Ferreira* Geógrafo - GEOPROCESSAMENTO IDSM | Coordenadoria de TI jefferson.ferre...@mamiraua.org.br *Instituto de Desenvolvimento Sustentável Mamirauá* Ministério da Ciência, Tecnologia e Inovação Telefone: +55 97 3343-9710 *Google Maps* - Mapas deste e-mail: Exibir mapa ampliado<https://maps.google.com.br/maps?q=-3.355557,-64.731151&ll=-3.355471,-64.731145&spn=0.004632,0.006968&num=1&t=h&z=18> *Contatos particulares:* *(55) 9615-0100 <%2855%29%209615-0100>* -- *Jefferson Ferreira-Ferreira* Geógrafo - GEOPROCESSAMENTO IDSM | Coordenadoria de TI jefferson.ferre...@mamiraua.org.br *Instituto de Desenvolvimento Sustentável Mamirauá* Ministério da Ciência, Tecnologia e Inovação Telefone: +55 97 3343-9710 *Google Maps* - Mapas deste e-mail: Exibir mapa ampliado<https://maps.google.com.br/maps?q=-3.355557,-64.731151&ll=-3.355471,-64.731145&spn=0.004632,0.006968&num=1&t=h&z=18> *Contatos particulares:* *(55) 9615-0100* [[alternative HTML version deleted]]
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